diff --git a/server.js b/server.js
index f681b90..421dac9 100644
--- a/server.js
+++ b/server.js
@@ -125,7 +125,8 @@ io.on('connection', (client) => {
                 }
                 break
             case 'showLetter':
-                sensehat.led.showLetter(character)
+                if (color == undefined) color = [255, 255, 255]
+                sensehat.led.showLetter(character, color, backcolor)
                 io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
                 break
             default: